Air separator



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PAASCHE l AIR SEPARATOR Filed oct. 24. 191e VIFOUTLET my 1o, 1923;

2 Sheets-Sheet 1 AIR SEPARATOR Filed Oct. 24, 1918 2 hoost-Shee. 2

Patented July 111, 1823.

4para sima JENS A. PAASCHE, OF CHICAGO, ILLINOIS.

AIR SEPARATOR.

i Application led October 241, 1918. Serial No. 259,539.

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Be it known that I, JENs A. PAAsoHn, a citizen of the United States, residin at Chica o, in the county of Cook and tate of s Il inois, have invented certain new and usefill Improvements in Air Separators, of-

which the following is a specification.

This invention relates to means for separating moisture, oil or other foreign substances from air; and while the invention is capable of use in various ways, thel device is particularly intended to be coupled into the air line of a pneumatic painting apparatus for the purpose of separating the foreign matter from the air so as to insure that the air delivered to' the pneumatic paint brush will be lpure and dry.

The object of the invention isto provide a separator of this character which is small,

2o compact, and light in weight; which, at the same time, is of grea't capacity; and which is constructed so that it may be cheaply manufactured.

In the accompanying drawings, Figure 1 2e is a side elevation of a separator embodying my invention. Fig. 2 is a vertical or longitudinal central section therethrough. -Flg` 3 is a fragmental vertical section in `the lane of line 3 3 of Fig. 1 looking in the so. irection of the arrows. Figs. 4, 5, `6 and 7 are horizontal ortransverse sectional views taken respectively in the planes of lines 4 4, 5 5, 6-6 and 7 7 of Fig. 2 and looking in the direction of the arrows. Fig.

8 is a fragmental elevational detail view of the outer one of the spiral conduit members.

While my invention is susceptible of embodiment in various forms, I have shown 1n the drawings only the preferred embodi-v ment, but it should be understood that I do not thereby intend to limit the invention in any way, but `aim-to cover in the appended claims all modifications and equivalents e5 falling within the scope of the invention.

Referring toFigs. 1 and 2, it will be seen that the separator herein shown comprises a central or' intermediate head 10 having recesses in its upper and lower sides, into 'e0 which recesses two tubes 11 and 12 fit in air-tight condition: The upper end of the tube 11 is closed by a' head 13 and the lower end'of the tube 12 is closed by a head 14.-

The intermediate head 10 has an air pasw sage 15 therein which opens at one end upon the lower side of the head, the other end of said passage being enlarged and internally screw-threaded to receive one shank of a valve 16 or other connection, the opposite shank of which is adapted for attachment to a source of compressed air. Preferably a screen 17 ils placed between the shank of the vvalve 16 and the shoulder formed by the enlargement of the passage 15, so as to pre- .vent foreign particles of any appreciable size from entering the separator.

. Within the chamber formed by the tube 12 is means for causing the air to travel through a long circuitous route in the chamber before passing therefrom into the next chamber. This means in the preferred form shown comprises a tubular member 18 havv ling a plain cylindrical bore in its interior and having on its exterior a helical rib running from end to end thereof and fitting snugly within the tube 12 to forma channel for the air. This member 18 is attached to the head 1Q by suitable means such as a fitting 19 threaded upon one end of the member 18 vand having a central shank which is threaded into vthe head 10. A small pipe 20 is attached to the shank 19 and projects up into the chamber formed by the tube 11 a material distance above the head 10, for a purpose which will appear later. This pipe 20 virtually forms a continuation of the shank vof the fitting 19.

Within the member 18 is another member 21 having an external spiral rib running from end to end thereof and fitting snugly within the bore of the member 18 to form an air channel. Thismember 21 has a central pin 22 which is threaded into the head 14:.

The air entering through the valve 16 and passage 15 fiows downwardly through the spiral passage provided by the member 18 and the wall of the tube l2 and thence upward through the spiral passage formed by the member 21 and the inner bore of the member 18, after which `the air passes up through the fitting 19 and pipe2() into the chamber formed by the tube 11.

The lower end of the member 18 is spaced a material distance above the head 14 so as to provide a chamber to receive the liquid condensation in its flow through the passageways mentioned. vBy reason of the contact of the air with the metal of which the parts of the separator are formed the moisture in the air will collect on the metal and icc be condensed and il'ow down the spiral passageway of the member 18 to the open chamber at the bottom of the tube 12. A pet cock 23 provides means for drawing off the condensed liquid.

If desired, more than one air inlet may be provided in' the head '10. a I have herem shown another inlet passage 24 (see Figs. 3,

and 6) which passage is temporarily closed by a lug 25, but is ada ted toreceive an air inlet valve or other tting such as the valve 16.

The upper chamber in the tube 11 is filled with a suitable straining, filtering or screening material 26, as, -for example, excelsior, so that the air issuing from the pipe must pass through such material before escaping from the separator. In the present instance the head 13 at the top of the tube 11 is made in two parts, the upper or inner part of which is threaded to receive an air outlet valve 27. Preferably a screen 28 is (r the conductor 20 upwardly from the headprovided vat the lower end of said valve to prevent the air from carrying with it any part of the straining material 26. Said straining material is not placed in the lower portion of the tube 1l, so that an; open chamber is formed to catch any condensation of moisture, oil or other material that may not be collected by the lower portion of the separator. The purpose of extendin 10'is to `prevent the condensed liquid in the chamber from draining back into the lower chamber. lThe head 10 has an outlet passage v 29 therein, in the outer end of which is mounted a pet cock 30 (see Fig. 1) through which the condensation from the v upper chamber may be drained.

I claim as my invention:

1. An air separator comprising, in 'combination, two alined upright tubes, an intermediate head closing the adjacent ends of both tubes, heads closing the remote ends of said tubes,-said intermediate head having an air inlet opening into the lower tube and having a drain cock opening from the upper tube, the uppermost head having an air outlet and the lowermost head having a drain cock. means in the lower tube for condensing and collecting moisture, and additional collecting means in the upper tube.

2. An air separator comprising, in coinbination, two alined upright tubes, an intermediate head closing the adjacent ends of both tubes, the remote ends of said tubes also being closed, air inlet means in said intermediate head opening into the lower tube, means in the lower tube which provides a long, circuitous route through which the air must pass whereby to condense and collect moisture therein, said route opening into said upper tube, additional collecting means in said upper tube, drain cocks communicating lwith the lower ends of both tubes for draining condensation therefrom, and air outlet 4means at the upper end of the upper tube.

3. An air se arator comprising, in combination, two c ambers, a single head closing one end of each ch'amber, air inlet means opening into one chamber, air outlet means communicating with the other chamber, drain cocks communicatin with both chambers, means in the first c amber for causing the air to travel lthrough a long, circuitous route and for delivering air into the second chamber, and means in the second chamber for further collecting foreign matf ter.

4. An .air separator comprising, in combination, a partition, oppositely extending alined tubular chambers extending from sai partition,'.a pluraligy of radially extendin passageways in sai partition, one of sai passageways communicating with the lower end of one of said chambers, and the rel mainder of said passageways communicating with the upper end of the other of sai chambers. i

5. An air separator comprising, in combination, air inlet means, a casing vextending in both directions from said air inlet means to form two chambers, return 'HOW- means in one of said chambers for conducting gas to the end of said chamber and back through helical channels, a Iilling of straining material occupying part of said second chamber and an outlet at the end of said second chamber.

6. An air separator comprising, in combination. a tubular casing having an air inlet and an air outlet at its upper end, a member having an external helical rib fitting within said casing to provide a helical 105 air channel for conducting the incoming air to the lower part of casing, Asaid member having a tubular inner bore, and another member having an external helical rib fitting within said bore and providing a helical air passage to conduct the air upwardly toward said outlet, and means in the lower part of said casing for draining the condensation therefrom.

7. An air separator comprising, in com- 116 bination, three concentric parts fitting one within the other and constructed to provide two helical air passages, means to admit air to the upper end of one passage, eans to permit the out-iiow of air from t e upper 120 end of the other passage, and means for drawing ofi' the condensation from the lower ends of both passages.

8. An air separator comprising, in conibination, a. plug, an air outlet mounted in 335 said plug, a tube extending from said plug, materialadapted to strain air in the upper end of said tube, a flanged diaphragm clos- .ing the lower end of said tube and supporting the same, a second tube attached to the il@ Menem opposite fece ot said diaphre un e lug closu ing the lower end of said secon tube, ea drain cock associated with said' plug, e tubular member fitting in said lest mentioned tube and having a helical enge deniug a helical passage-Way extending from the top of said tube to a point adjacent the bottom, e cylindrical member having a helical enge telescoped within said tubular member, said tubular member being epertured at its upper end and passing` throu h said diaphragm, a discherge tube in the upper end of said tubular member extending above said diaphragm, an eir inlet passage-way in said diaphragm communicating with the upper end of seid lowerA tube and a passage-way in seid diephragm for draining oil? 'material from seid upper tube, substantially as described. v

9. A cleaner comprising a casing; a partition dividin the interior of said casing into a primary camber and e secondary chamber, seid primary chamber being cylindricel and said partition consisting of a well forming the end of said primary chamber seid partition having an opening therein o smaller diameter than seid primary chem ber; means for causing the eil' in seid primary/"chamber to rotate ebout the' anis of said chamber; en outlet'meens for said secondary chamber; and a ltering medi in said secondery 'chamber so pleced thet there is afree expensionspece between said partition and seld ltering medium.

bottom of said second chamber and adje' centv to the lower end of the filtering means,

and separate devices communicating with the lower ends of said chambers for independently draining each of said chbers.

ln testimony whereof, l have hereunto set my bend.

all. A.. PMSHE. 

